<!DOCTYPE html>
<html>
	<head>
		<meta charset="utf-8">
		<title></title>
		<style type="text/css">
			ul li::before{
				content: "dsadsdsa";
				width: 10px;
				height: 100px;
				background-color: #FF0000;
				border: 2px solid #000000;
				position: absolute;
		/* 		left: 5px;
				top: 10px; */
			}
			ul li{
				margin-bottom: 20px;
				position: relative;
			}
		</style>
	</head>
	<body>
		<div class="box">
			<ul>
				<li>1</li>
				<li>2</li>
				<li>3</li>
				<li>4</li>
				<li>5</li>
				<li>6</li>
			</ul>
		</div>
		
	</body>
</html>
